The trachea is the main trunk of the respiratory system. It is the central passageway from which the respiratory tree branches.
aorta
Ascending aorta
The aorta.
Aorta
The main function of the digestive system is to get the food and water you drink through your body.
If you are coming from a city or county water main you do not need a water tank or pump system as the main should already be pressurized.
Yes they are.
no
the trunk
trunk
aorta